CN103374741A - Anodic oxidizing process of aluminum alloy - Google Patents
Anodic oxidizing process of aluminum alloy Download PDFInfo
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- CN103374741A CN103374741A CN 201310275018 CN201310275018A CN103374741A CN 103374741 A CN103374741 A CN 103374741A CN 201310275018 CN201310275018 CN 201310275018 CN 201310275018 A CN201310275018 A CN 201310275018A CN 103374741 A CN103374741 A CN 103374741A
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- aluminium alloy
- anodic
- carrying
- oxidizing process
- cold water
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Abstract
The invention discloses an anodic oxidizing process of an aluminum alloy. The anodic oxidizing process comprises the following steps of: 1, carrying out slight mechanical polishing; 2, carrying out chemical degreasing; 3, cleaning comprising hot water cleaning and cold water cleaning; 4, carrying out shining treatment in HNO3; 5, carrying out anodic oxidation; and 6, drying after cleaning with cold water and distilled water. An electrolyte used in the anodic oxidizing process is reasonable in formula, and all components in the electrolyte are common chemicals and are easily available in raw materials and low in cost. The anodic oxidizing process can be carried out at a normal temperature, and is mild in treatment conditions during using, simple in procedures, low in control requirement of process conditions, and simple in operation. An oxidizing film obtained by treating the aluminum alloy is high in hardness, good in corrosion resistance and strong in heat insulation and resistance properties.
Description
Technical field
The present invention relates to the aluminium technical field of surface, be specifically related to a kind of anode oxidation process of aluminium alloy.
Background technology
Along with the development of aluminum products processing industry, in the industrial method that adopts more and more widely anodic oxidation or chemical oxidation, at aluminium and articles made of aluminium alloy Surface Creation layer oxide film, with the purpose that reaches protection and decorate.Through the oxide film that chemical oxidation treatment obtains, thickness is generally 0.3～4um, and soft, the wear-resisting and etch resistant properties of matter all is lower than anode oxide film.So, except special purpose is arranged, use seldom separately.But it has preferably adsorptive power, paints on its surface again, can effectively improve the solidity to corrosion of aluminum products and ornamental.
Through the oxide film that anodic oxidation treatment obtains, thickness is generally at 5-20v m, and hard anodized film thickness can reach its rete of 60-2500m. also to have like lower characteristic: (1) hardness is higher; (2) higher solidity to corrosion is arranged; (3) stronger adsorptive power is arranged; (4) good insulating property are arranged; (5) adiabatic heat resistanceheat resistant performance is strong.In sum, aluminum and its alloy is through chemical oxidation treatment, and particularly after the anodic oxidation treatment, the oxide film that forms on its surface has the characteristics such as good protection and decoration.Therefore, be widely used in the aspects such as aviation, electric, electronics, machinofacture and light industry industry.
Summary of the invention
Technical problem to be solved by this invention provides a kind of anode oxidation process of aluminium alloy, and the control of this anode oxidation process condition requires low, simple to operate.
For solving the problems of the technologies described above, the anode oxidation process of a kind of aluminium alloy of the present invention comprises the steps:
(1) slight mechanical polishing;
(2) electrochemical deoiling;
(3) clean: comprise that hot water cleans and cold water cleans;
(4) HNO
3Middle gloss finish;
(5) anodic oxidation,
The mass percent of each component is as follows in the electrolytic solution:
K
2TiO(C
2O
4)
2 35～45%
H
3C
6H
5O
7·H
2O 1～1.5 %
H
3BO
3 8～10%
H
2C
2O
4·2H
2O 2～5 %
Electrolytic condition is: temperature is 20～30 ℃, and the time is 20～40min; It is 2～5 A/dm that current density begins
2, terminate as 0.6～1.2 A/dm
2Voltage is 90～110V; Cathode material is pure aluminum plate;
(6) to get final product after the drying after cold water and the distilled water cleaning.
Further, above-mentioned steps (6) also comprises dyeing process and mechanical polishing process.
Improve the physicalies such as the erosion resistance of oxide film and wear resistance for step more, the mass percent of each component of electrolytic solution is as follows in the above-mentioned steps (5):
K
2TiO(C
2O
4)
2 40%
H
3C
6H
5O
7·H
2O 1.2 %
H
3BO
3 9%
H
2C
2O
4·2H
2O 4 %。
Electrolytic condition more preferably in the above-mentioned steps (5): temperature is 25 ℃, and the time is 30min; It is 3 A/dm that current density begins
2, terminate as 1 A/dm
2Voltage is 100V.
Compared with prior art, the beneficial effect that has of the present invention is as follows:
The prescription of electrolytic solution of the present invention is reasonable, and each component is the general chemistry product, and raw material is easy to get, and is with low cost.The present invention can produce at normal temperatures, and treatment condition are gentle during use, and operation is simple, and the control of processing condition requires low, and is simple to operate.Aluminium alloy is high through the hardness that the present invention processes the oxide film obtain, good, the adiabatic heat resistanceheat resistant performance of solidity to corrosion is strong, can be widely used in the aspects such as aviation, electric, electronics, machinofacture and light industry industry.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art should understand that described embodiment only is used for helping to understand the present invention, should not be considered as concrete restriction of the present invention.
Specify such as nothing, various raw materials of the present invention all can obtain by commercially available; Or prepare according to the ordinary method of this area.Unless otherwise defined or explanation, the skilled same meaning be familiar with of the person of entering of all specialties used herein and scientific words and art technology.Any method similar or impartial to described content and material all can be applicable in the inventive method in addition.
Unless otherwise indicated, same meanings of being familiar with of all specialties used herein and scientific words and those skilled in the art.
Any method similar or impartial to described content and material all can be applicable in the inventive method in addition.
Embodiment 1
A kind of anode oxidation process of aluminium alloy comprises the steps:
(1) slight mechanical polishing;
(2) electrochemical deoiling;
(3) clean: comprise that hot water cleans and cold water cleans;
(4) HNO
3Middle gloss finish;
(5) anodic oxidation, the mass percent of each component is as follows in the electrolytic solution:
K
2TiO(C
2O
4)
2 40%
H
3C
6H
5O
7·H
2O 1.2 %
H
3BO
3 9%
H
2C
2O
4·2H
2O 4 %
Electrolytic condition is: temperature is 25 ℃, and the time is 30min; It is 3 A/dm that current density begins
2, terminate as 1 A/dm
2Voltage is 100V.
(6) to get final product after the drying after cold water and the distilled water cleaning.
Electrolyte quota is as follows: according to the good needed pharmaceutical chemicals of volume calculation: at first with K
2TiO (C
2O
4)
2Be dissolved in the distilled water of 50-60 degree, pour in the groove, then add oxalic acid, boric acid, citric acid, last adding distil water stirs to working level, with careless acid for adjusting pH value reach l.8～2.0, get final product after qualified through debugging oxidation.
Bian is that 7175 aluminium alloy carries out oxide treatment and can obtain evenly faint yellow, smooth oxidation film layer with above technique to model.
Embodiment 2
A kind of anode oxidation process of aluminium alloy comprises the steps:
(1) slight mechanical polishing;
(2) electrochemical deoiling;
(3) clean: comprise that hot water cleans and cold water cleans;
(4) HNO
3Middle gloss finish;
(5) anodic oxidation, the mass percent of each component is as follows in the electrolytic solution:
K
2TiO(C
2O
4)
2 35%
H
3C
6H
5O
7·H
2O 1 %
H
3BO
3 8%
H
2C
2O
4·2H
2O 2 %。
Electrolytic condition is: temperature is 25 ℃, and the time is 30min; It is 3 A/dm that current density begins
2, terminate as 1 A/dm
2Voltage is 100V.
(6) to get final product after the drying after cold water and the distilled water cleaning.
Electrolyte quota is as follows: according to the good needed pharmaceutical chemicals of volume calculation: at first with K
2TiO (C
2O
4)
2Be dissolved in the distilled water of 50-60 degree, pour in the groove, then add oxalic acid, boric acid, citric acid, last adding distil water stirs to working level, with careless acid for adjusting pH value reach l.8～2.0, get final product after qualified through debugging oxidation.
Bian is that 7175 aluminium alloy carries out oxide treatment and can obtain evenly faint yellow, smooth oxidation film layer with above technique to model.
Embodiment 3
A kind of anode oxidation process of aluminium alloy comprises the steps:
(1) slight mechanical polishing;
(2) electrochemical deoiling;
(3) clean: comprise that hot water cleans and cold water cleans;
(4) HNO
3Middle gloss finish;
(5) anodic oxidation, the mass percent of each component is as follows in the electrolytic solution:
K
2TiO(C
2O
4)
2 45%
H
3C
6H
5O
7·H
2O 1.5 %
H
3BO
3 10%
H
2C
2O
4·2H
2O 5 %。
Electrolytic condition is: temperature is 25 ℃, and the time is 30min; It is 3 A/dm that current density begins
2, terminate as 1 A/dm
2Voltage is 100V.
(6) to get final product after the drying after cold water and the distilled water cleaning.
Electrolyte quota is as follows: according to the good needed pharmaceutical chemicals of volume calculation: at first with K
2TiO (C
2O
4)
2Be dissolved in the distilled water of 50-60 degree, pour in the groove, then add oxalic acid, boric acid, citric acid, last adding distil water stirs to working level, with careless acid for adjusting pH value reach l.8～2.0, get final product after qualified through debugging oxidation.
Bian is that 7175 aluminium alloy carries out oxide treatment and can obtain evenly faint yellow, smooth oxidation film layer with above technique to model.
Embodiment 4
A kind of anode oxidation process of aluminium alloy comprises the steps:
(1) slight mechanical polishing;
(2) electrochemical deoiling;
(3) clean: comprise that hot water cleans and cold water cleans;
(4) HNO
3Middle gloss finish;
(5) anodic oxidation, the mass percent of each component is as follows in the electrolytic solution:
K
2TiO(C
2O
4)
2 40%
H
3C
6H
5O
7·H
2O 1.2 %
H
3BO
3 9%
H
2C
2O
4·2H
2O 4 %
Electrolytic condition is: temperature is 20 ℃, and the time is 40min; It is 5 A/dm that current density begins
2, terminate as 1 A/dm
2Voltage is 100V.
(6) to get final product after the drying after cold water and the distilled water cleaning.
Electrolyte quota is as follows: according to the good needed pharmaceutical chemicals of volume calculation: at first with K
2TiO (C
2O
4)
2Be dissolved in the distilled water of 50-60 degree, pour in the groove, then add oxalic acid, boric acid, citric acid, last adding distil water stirs to working level, with careless acid for adjusting pH value reach l.8～2.0, get final product after qualified through debugging oxidation.
Bian is that 7175 aluminium alloy carries out oxide treatment and can obtain evenly faint yellow, smooth oxidation film layer with above technique to model.
Applicant's statement, the person of ordinary skill in the field is on the basis of above-described embodiment, concrete content point value with above-described embodiment component, combined with the technical scheme of summary of the invention part, thereby the new numerical range that produces, also be one of record scope of the present invention, the application is no longer enumerated these numerical ranges for making specification sheets simple and clear.
Claims (4)
1. the anode oxidation process of an aluminium alloy is characterized in that comprising the steps:
(1) slight mechanical polishing;
(2) electrochemical deoiling;
(3) clean: comprise that hot water cleans and cold water cleans;
(4) HNO
3Middle gloss finish;
(5) anodic oxidation,
The mass percent of each component is as follows in the electrolytic solution:
K
2TiO(C
2O
4)
2 35～45%
H
3C
6H
5O
7·H
2O 1～1.5 %
H
3BO
3 8～10%
H
2C
2O
4·2H
2O 2～5 %
Electrolytic condition is: temperature is 20～30 ℃, and the time is 20～40min; It is 2～5 A/dm that current density begins
2, terminate as 0.6～1.2 A/dm
2Voltage is 90～110V; Cathode material is pure aluminum plate;
(6) to get final product after the drying after cold water and the distilled water cleaning.
2. the anode oxidation process of a kind of aluminium alloy as claimed in claim 1, it is characterized in that: described step (6) also comprises dyeing process and mechanical polishing process.
3. the anode oxidation process of a kind of aluminium alloy as claimed in claim 1 is characterized in that: the mass percent of each component of electrolytic solution is as follows in the described step (5):
K
2TiO(C
2O
4)
2 40%
H
3C
6H
5O
7·H
2O 1.2 %
H
3BO
3 9%
H
2C
2O
4·2H
2O 4 %。
4. the anode oxidation process of a kind of aluminium alloy as claimed in claim 1 is characterized in that: electrolytic condition is in the described step (5): temperature is 25 ℃, and the time is 30min; It is 3 A/dm that current density begins
2, terminate as 1 A/dm
2Voltage is 100V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310275018 CN103374741A (en) | 2013-07-02 | 2013-07-02 | Anodic oxidizing process of aluminum alloy |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN 201310275018 CN103374741A (en) | 2013-07-02 | 2013-07-02 | Anodic oxidizing process of aluminum alloy |
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Family
ID=49460563
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256355A (en) * | 2015-11-17 | 2016-01-20 | 惠州市泽宏科技有限公司 | Aluminum alloy mirror surface glazed ceramic anodic oxidation process |
| CN105369321A (en) * | 2015-11-17 | 2016-03-02 | 惠州市泽宏科技有限公司 | Ceramic anode oxidation solution and ceramic anode oxidation process |
| CN106757235A (en) * | 2016-11-19 | 2017-05-31 | 祁阳宏泰铝业有限公司 | A kind of aluminum alloy surface titanizing processing method |
| CN107090590A (en) * | 2017-04-24 | 2017-08-25 | 南京邮电大学 | A kind of aluminium alloy anode oxide electrolyte and oxidation technology based on corrosion inhibiter |
-
2013
- 2013-07-02 CN CN 201310275018 patent/CN103374741A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256355A (en) * | 2015-11-17 | 2016-01-20 | 惠州市泽宏科技有限公司 | Aluminum alloy mirror surface glazed ceramic anodic oxidation process |
| CN105369321A (en) * | 2015-11-17 | 2016-03-02 | 惠州市泽宏科技有限公司 | Ceramic anode oxidation solution and ceramic anode oxidation process |
| CN106757235A (en) * | 2016-11-19 | 2017-05-31 | 祁阳宏泰铝业有限公司 | A kind of aluminum alloy surface titanizing processing method |
| CN106757235B (en) * | 2016-11-19 | 2018-06-26 | 祁阳宏泰铝业有限公司 | A kind of aluminum alloy surface titanizing processing method |
| CN107090590A (en) * | 2017-04-24 | 2017-08-25 | 南京邮电大学 | A kind of aluminium alloy anode oxide electrolyte and oxidation technology based on corrosion inhibiter |
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Application publication date: 20131030 |